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1   /*****************************************************************
2    * Licensed to the Apache Software Foundation (ASF) under one   *
3    * or more contributor license agreements.  See the NOTICE file *
4    * distributed with this work for additional information        *
5    * regarding copyright ownership.  The ASF licenses this file   *
6    * to you under the Apache License, Version 2.0 (the            *
7    * "License"); you may not use this file except in compliance   *
8    * with the License.  You may obtain a copy of the License at   *
9    *                                                              *
10   *   http://www.apache.org/licenses/LICENSE-2.0                 *
11   *                                                              *
12   * Unless required by applicable law or agreed to in writing,   *
13   * software distributed under the License is distributed on an  *
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY       *
15   * KIND, either express or implied.  See the License for the    *
16   * specific language governing permissions and limitations      *
17   * under the License.                                           *
18   ****************************************************************/
19  
20  package org.apache.james.smtpserver;
21  
22  import org.apache.james.util.mail.dsn.DSNStatus;
23  
24  /***
25    * Handles QUIT command
26    */
27  public class QuitCmdHandler implements CommandHandler {
28  
29      /***
30       * The name of the command handled by the command handler
31       */
32      private final static String COMMAND_NAME = "QUIT";
33  
34      /***
35       * handles QUIT command
36       *
37       * @see org.apache.james.smtpserver.CommandHandler#onCommand(SMTPSession)
38       */
39      public void onCommand(SMTPSession session) {
40          doQUIT(session, session.getCommandArgument());
41  
42      }
43  
44  
45      /***
46       * Handler method called upon receipt of a QUIT command.
47       * This method informs the client that the connection is
48       * closing.
49       *
50       * @param session SMTP session object
51       * @param argument the argument passed in with the command by the SMTP client
52       */
53      private void doQUIT(SMTPSession session, String argument) {
54  
55          String responseString = "";
56          if ((argument == null) || (argument.length() == 0)) {
57              session.getResponseBuffer().append("221 "+DSNStatus.getStatus(DSNStatus.SUCCESS,DSNStatus.UNDEFINED_STATUS)+" ")
58                            .append(session.getConfigurationData().getHelloName())
59                            .append(" Service closing transmission channel");
60              responseString = session.clearResponseBuffer();
61          } else {
62              responseString = "500 "+DSNStatus.getStatus(DSNStatus.PERMANENT,DSNStatus.DELIVERY_INVALID_ARG)+" Unexpected argument provided with QUIT command";
63          }
64          session.writeResponse(responseString);
65          session.endSession();
66      }
67  
68  
69  }
70  
71  
72